Even if you use okta, you should understand the principles listed. There's not much to it, but doing it right is tedious.
C0D45941825dIf it was me, I would rip it apart and learn it E2E, but then I've come to realise a great many devs these days don't learn the finer details of what they are using - how the tables have turned over the years.
ltlian186325dI found it useful to learn the difference between implicit flow and authorization code flow. Like mentioned, the chain of events involved and not so much a specific implementation in code.
When there's an addition to the team and they are even just vaguely aware of it "existing" it's a huge help compared to someone who needs an onboarding process to explain why we don't store the user password in the frontend and pass it in every request.